Victron Energy Argofet 100-2, 2 batteries 100A

Argo FET Battery Separation

Similar to isolating diodes, FET isolators allow simultaneous charging of two or more batteries through an alternator or through a charger connection without connecting the batteries together. Discharging the on-board battery does not result in simultaneous discharging of the starter battery. In contrast to isolating diodes, there is practically no voltage loss with FET isolators. The voltage drop is less than 0.02 volts at low currents and only 0.1 volts at higher currents. With ARGO FET battery isolation, no voltage increase is required. However, one should pay attention to short cable lengths and sufficient cross-sections.

Generator start-up excitation
Some generator types require a DC voltage at the B+ pole for start-up excitation. On the one hand, there is a direct cable connection between the battery and the generator. On the other hand, however, the isolating diode prevents the current from flowing back, so that the generator does not start. The new Argofet battery isolator has a special current-limited connection for start excitation when the generator is started.